Gotta powder coat that valve cover man!

 

in lieu of that i turned my boost controller down to the gate level (15) and have not even boosted to 3 psi. the minute i hit the 80kpa threshold in the tune the cel goes ape. which isnt a huge deal right now because the car actually makes a liveable amount of torque out of boost. i did a bit of a test this a.m.. i unplugged my knock sensor to see the difference and there was little difference in the log. 32 counts at atmospheric pressure seems absurd. i think its either dead or the harness is compromised. if not my downpipe is nearly touching the pan. i really doubt this is really knocking it feels like its gonna be an animal. should i pull some transitional timing out earlier? and thanks for the response

as far as the valve cover.. not really my style. i'm kinda junk yardy

 

Sounds like phantom knock, or really bad fuel. Or the knock sensor programming has been messed with. But you should get no knock counts with the sensor unplugged, so maybe the harness?

 

nice build.

 

so i eased the rpm up to 4000 rpm then nailed it to 12 psi and 5500 rpm....no knock. i see what you meant about the table being shifted. still seems high. i will revamp my table and see if it changes my resultant. i am the only one thats been in the ecu and i havent changed knock settings just light options. tephra v7 also 9.5:1. gas should be ok. upstate ny 93 is generally ok where i get it. e85 isnt in the cards. my car would run outta fuel before i got to the closest station.

 

ok after some more tuning and post scrounging i did some more testing. i get crazy knock counts if i go wot from 2500 rpm. but if i ease up to 3500 and go wot my knock is good and rational. i was a little lean and picked up 4 counts at wot. which forced me to finally scale my injectors and latency. might not be the best time to do it but having a fudge factor in the high octane fuel map was just b.s.. so i actually got my afr values to match my wideband and fattened the offending area up a little. upper knock is gone. but the transition knock is still there . i have numbed down the lowrpm knock amout. and its better. any suggestions?

 

What is knock voltage where its knocking, and how many counts are you still getting?

 

i am only getting 7-9 counts now. i will log voltage. smoothing seemed to help.

 

7-9 is at least manageable compared to 30+ lol. You don't want knock voltage much higher than 2, if at all.

 

did a log and knock voltage was all over the place. here is a log
f g h i n
rpm load time knock knockv



first log i pulled it from a little lower than the second but wildly different results.

 

Row N looks like knock voltage more than anything else.

You need to freeze the top row so the labels stay in view. Scroll the spreadsheet all the way to the top. Click on the view menu, pick "freeze panes" than "freeze top row". You have to do this with the spreadsheet scrolled all the way to the top.

 

thanks i have been looking for a way to do that. yes n is volts. thats what my cryptic key in that post is for

 

AH! Now I see the key...lol


The knock voltage seems low to be getting that much knock. You also don't even have a lot of timing for the load and RPM. Something definitely isn't right.

Did you properly torque the knock sensor when you installed it?

 

kind of what i was thinking. i set my low knock multiplier to 17 and it eliminated nearly all of it. i have been scouring knock posts and found the consensus to be 2.3 with no balance shafts are noisy. i don't know if its true or not but i don't think this should sound the knock alarm as loud as it does and it's inconsistency is cause for skepticism.
other than that it is smooth and the low speed torque is great. what voltage would be "a lot"?

oh and i am sure i did not torque the knock sensor properly. i am ashamed to admit it is probably over torqued. i should know better . grand nationals act goofy when you over tighten theirs too.

 

The torque on the knock sensor is highly important, you should probably redo that..


And my tuner usually shoot for 2.0, and at maximum is ok with occasionally seeing 2.2ish if it doesn't generate a knock count..